Isuzu N-Series. Manual — part 1107
8-140 CAB AND CHASSIS ELECTRICAL
Headlight, Fog Light, Rear Fog Light and Cornering Light
General Description
The circuit consists of headlight, fog light, cornering light, starter switch, combination switch (Lighting switch, dimmer
/ passing switch, cornering light switch), fog light switch, high beam indicator light and relay.
When the lighting SW is turned on by setting it at headlight position, the lighting relay is actuated to turn on the head-
light. The optical axis of the headlight can be turned up or down by operating the dimmer SW while headlight is on.
The passing SW is independent of the lighting SW, and the optical axis of the passing light can be turned up only
while the switch lever is pulled up and held in this state.
Fog light turns on by switching it to “ON” position to activate relay only while lighting SW is on.
When the headlight is on, turn the turn-signal switch left or right, and then the cornering switch built in the combination
switch turns on, followed by the cornering light turning on.
Lighting Circuit
Notice:
Arrow marks indicate the direction of current.
CORNERING LIGHT
HEADLIGHT
FOG LIGHT
REAR FOG LIGHT
Starter sw.(ON)
Cornering
light relay
Dimmer
relay
Cornering
light
Cornering
light sw.
Lighting sw.
Dimmer sw.
Fog light
sw.
Fog light
LO
HI
L
H
OFF
RR FOG
Rear
fog light
Rear
fog light
relay
Headlight
Headlight
relay
Tail
relay
Battery (+)
N8A5573E
CAB AND CHASSIS ELECTRICAL 8-141
Parts Location
Except NKR For Indonesia
N8A5130E
8-142 CAB AND CHASSIS ELECTRICAL
NKR For Indonesia
N8A0449E
CAB AND CHASSIS ELECTRICAL 8-143
Circuit Diagram
For 12 Volt
X-9
X-4
H-6
B-67
B-67
B-17
B-17
X-6
B-55
B-52
B-72
B-3
B-72
B-87
B-73
B-73
B-4
X-3
H-7
OFF
ON
ACC
ST
B
B-1
B-74
B-5
B-70
B-70
B-74
B-5
B-7
OFF
H
T
HIGH
LO
E2
PASS
B-70
P-5
P-1
P-2
P-3
P-4
2
X-3
X-3
X-3
21
45
1
2
3
X-4
X-4
X-4
1
2
45
X-9
X-9
X-9
21
45
B-4
B-4
B-73
12
3
21
3
B-87
B-87
B-87
32
65
B-3
1
2
1
2
10
10
X-6
X-6
X-6
X-6
21
3
45
11
33
11
9
LH
RH
B-70
B-70
B-70
Hu
2
4
10
7
B-70
B-70
8
1
B-17
1
3
2
KEY SW
FL-2 50A
MAIN
FL-1 100A
MAIN
HEAD LAMP
FL-4 30A
3W/L
8W
5W
2
H-7
2W/R
RELAY; HEADLIGHT
0.3R
DIODE
LIGHTING SWITCH
0.3L/R
0.3R
CORNERING LIGHT SWITCH
COMBINATION SWITCH
0.3L
0.5R/W
0.5P
0.85B
0.5P/B
3B
FRAME-LH (FRONT)
HEADLIGHT
BRACKET (LH)
0.85B
1.25B
0.3R/L
RELAY; DIMMER
1.25B
0.85B
0.85B
0.5B
0.5B
0.5R/G
0.85R/G
0.85R/G
0.5B
1.25R/Y
0.85R/G
0.85R/G
1.25R/Y
0.5R/B
RELAY;
CORNERING LIGHT
0.5G/O
0.5R/L
0.5B/Y
STARTER SWITCH
F-16 10A
METER
3W/B
3W/B
3W/B
8W/B
RELAY; TAIL
0.5LG/R
F-24
HEAD LIGHT
(LH)
F-23
10A
10A
HEAD LIGHT
(RH)
FOG LIGHT SWITCH
HEADLIGHT
HEADLIGHT
2R
2R
CORNERING LIGHT
(RH)
(LH)
HL
0.85R
0.85R/L
HIGH BEAM INDICATOR
LIGHT (METER)
FOG LIGHT (LH)
FOG LIGHT (RH)
2
FRAME
3B
F-7
15A
TAIL LIGHT
F-6
10A
4JH1:3.0W
4JB1, 4JB1-TC:3.0L
FRT FOG LIGHT,
CORNERING LAMP
0.85V
3B
H
I
LO
H
I
LO
2L
4JH1
3W/B
2W/R
N8A5131E
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